Diaphragm pressure motor



Mayas, 1943. Y c, w M Y i 2,320,191

l Brummen PRESSURE M0109 v F119@ Feb. 12. 1942 Patented May 25, I

DIAPHRAGM PRESSURE MOTOR Carl W. Mott, La Grange, Ill., assigner toInternational Harvester Company, a corporation oi' New JerseyApplication February 12, 1942, Serial No. 430,655

(climi-48) 'Ihis invention relates to an improvement in a huid-pressuremotor and more particularly to a diaphragm type of motor. l

The principal object of the diaphragm type.

Another object is toprovide an improved means for connecting diaphragmswithin a fluid-pressure motor.

A still further object is to provide an improved means for protectingthe diaphragms of a diaphragm type of motor from dirt and other foreignsubstances.

According to the present invention, a housing is formed with a chamberwhich is enclosed by a pair of diaphragms. A pair of relatively movablesleeve members extend within the housing inventionis to provide animproved fluid-pressure motor of the and 22 include anged portions 28and 2t which cooperate with the hanged portions it and 2t and are heldtogether by threaded bolt means 25. The securing means t and 22 thusdescribed cooperating With the diaphragms i@ and Il provide positivemeans for preventing leakage of huid from the chamber i2.

and are respectively connected to the diaythe following detaileddescription taken incon'- junction with the accompanying sheet ofdrawings. in which: V

Figure 1 is a. sectional view through a fluid pressure motor of thediaphragm type, showing the diaphragms in their contracted positions;

Figure 2 is a sectional view through a fluidpressure motor of thediaphragm type. showing the diaphragms in their extended positions; andFigure 3 is an elevational view of a tractor having an agriculturalimplement mounted thereon and showing a huid-pressure motor connectedthereto for actuating the movable parts of the implement.

Referring now to the drawing, there is shown `a duid-pressure motorgenerally designated at I with a. housing II having a chamber I2.Extending within the chamber l2 are a pair of rela.- tively movablesleeve members I3'and Id. Connected to the sleeve I4 bye. pin I6 is a.shaft I5 which serves to pilot the sleevemembers I3 and I4 in axialalinement upon relative movement thereof. The chamber I2 is respectivelyenclosed at each end by diaphragms i6 and l1. The outer portions of thediaphragms are respectively secured to flanged portions I9 and 20 on thehousing Il by securing means generally designated at 2| and 22.Thesecuring means 2l For securing the inner portion of the diaphragxn i@to the sleeve member i3, said sleeve member `is provided with anenlarged annular portion 26 having a flared edge di. A collar 2t havinga ared edge 29 clamps the diaphragm it to the annular portion 26 bymeansor threaded bolts 3d. The flared edges 2l and 2t form diverging surfaces3i, between which the diaphragm it is connected.

For securing the inner portion of the diaphragm il to the sleeve memberIB, said sleeve member Id is provided with an enlarged annular portion32 having a flared edge 33. A collar 3d having a flared edge 35 clampsthe diaphragm il! to the annular portion 25 by means of threaded bolts36. The dared edges 33 and 35 form diverging surfaces 3i, between whichthe diaphragm il is connected A conduit means 3@ is connected to thehousing ii as shown at' te and allows iluid to enter and leave thechamber i2 for moving the diaphragms either to their expanded orcontracted position.

The securing means 2i and 22 are respectively provided with cylindricalportions it and ii which form chambers d2 'and 43 into which thediaphragms it and il move when they are expanded, as best shown inFigure 2. The cylindrical portions do and di are respectively providedwith annular openings M and 5. When the diaphragme i6 and il areexpanded, the iiared edge 2l of the enlarged portions 26 and the flarededge 33 of the enlarged portion 32 respectively cooperate with theopenings d5 and M to enclose the diaphragms against dirt and otherforeign substances when in this position and thus prevent deteriorationof the diaphragms and subsequent fluid leakage from the chamber I2.

When in the contracted positions, the diaphragms` I6 and Il, as shown inFigure 1, are substantially within the chamber I2. In these positionsthe-flared edges 2l and 33 again act to` prevent exposure of thediaphragms to dirt and other foreign substances, this result beingobtained by the fact that the greater portions of the diaphragme aresubstantially covered by the ilared edges 21 and 33 of the enlargedportions 26 and 32. The diverging surfaces 3| and 31 formed by, theflared edges 21 and 29, and 33 and 35 actas means for limiting movementof the diaphragms I8 and I'I when they are'ex- As shown in Figure 3,th'e fluid-pressure motoru I is connected to a tractor 48 having animplement rig 41 mounted thereon. The implement rig 41 includes aground-working tool 48 which is movable to and from a ground-workingposition. The fluid-pressure motor I8 is connected to the tractor 46 bymeans of the sleeve I3 connected at one end to a manually operatedadjusting mechanism, generally designated at 48, including a lever 50pivotal at its lower end for adapting it to `be selectively set at thenotches 5I in the adjustment segment 52 for saidy lever. Thus, ,thelever50 serves as an adjustable reaction anchorage for the motor. Thesleeve I4 of the fluid-pressure motor I8 is connected to a lifting pipe38a which is in tum connected wto the implement rig 41 for lifting andlowering the ground-working tool 48. As shown in Figure`3.,

the fluid-pressure motor I 0 has operated to move the tool 48 out of theground and the diaphragms I6 and I1 are .in their expanded positions, asshown in .Figure Z. In order to lower the tool 4I!` back into theground, fluid is allowed to leave the chamber I2 `and the diaphragms I6and I1 take their positions, as shown in Figure 1.

While various changes may be made in the detail construction of thepresent invention, it

-shall be understood that such changes shall be within the spirit andscope of the present invention as defined by the appended claims. Whatis claimed is:

1. In combination, a housing having a chamber, a sleeve member extendingwithin said chamber and having a shaft rigidly carried thereon, a secondsleeve member slidably carried by the shaft for horizontal movement withrespect to the housing, a flared portion at one end of each ofthe sleevemembers, diaphragms respectively abutting each of the flared portions, aflared collar engaging the inner portions of each of the diaphragms, andthreaded means for securing the collars and the diaphragmsvto the sleevemembers, peripheral anges on each end of the housing, means forrespectively securing the diaphragms to the flanges including a pair ofanfor delivering fluid to and from the chamber formed by the housing andthe diaphragms to move the sleeve members with respect to the housing. I

2. In combination, a housing having a chamber, a sleeve member extendingwithin said cham-- ber andhaving a pilot shaft carried thereon, a secondsleeve member slidably carried on ythe shaft for movement with respectto the first sleeve member, an annular V-shaped portion at one end ofeach of the sleeve members, a diaphragm connected at the vertex of eachof the respective V-shaped portions, a flange at each end of thehousing, means for securing a diaphragm to each of the flanges forenclosing the.

ends of the chamber, and means for conducting fluid to the chamber toexpand the diaphragms to move one sleeve member with respect to theother.

3. In combination, ahousing having a chamber, a sleeve member extendingwithin said chamber and having a shaft carried thereon, a second sleevemember slidably carried on the shaft for movement with respect to thefirst sleeve member, an annular V-shaped portion at one end of each ofthe sleeve members, a diaphragm respec'- 4 tively connected at thevertex of each of the V- shaped portions, a flange at each end of thehousing, means for respectively securing a diaphragm to each of theflanges for enclosing the ends of the chamber including apair ofcylindrical portions, conduit means for delivering fluid to and from thechamberfor moving the diaphragms whereby the cylindrical portions serveto enclose the V-shaped portions.

4. In combination, a housing having a chamber, a first sleeve memberdisposed within the chamber and having a shaft carried thereon, a secondsleeve member slidably vcarried on the shaft for relative movement withrespect to the first sleeve member, an annular part at one end of thefirst sleeve member, a diaphragm secured to the annular part and alsosecured to the housing for enclosing the chamber, an annular part at oneend of the second sleeve member, a diaphragm secured to said annularpart and also secured to the housing for enclosing the chamber, meansfor conducting fluid to and from the chamber for moving the diaphragms,diverging side portions on each of the annular parts for limitingmovement of the diaphragms, and means at each end of thehousing forrespectively enclosing the diaphragm and the annular parts.

CARL W. MOI'I.

